#include <stdio.h>

//#define PI 3+2
/*int main() {
    int i=PI*2;
    float a=3e-3;   //浮点型表示
    printf("a is %f\n",a);
    printf("int is %d\n",sizeof(int));    //int 类型的大小
    printf("float is %d\n",sizeof(float));//float类型的大小
    return 0;
}*/

/*
int main()
{
    int i=5;
    float a=i/2;
    float b=(float)i/2;  //强制类型转换
    printf("a=%.2f\n",a);
    printf("b=%.2f\n",b);
    return 0;
}*/

/*int main()
{
    int num=10;
    int score=100;
    printf("num=%3d,score=%d\n",num,score);
    printf("num=%-3d,score=%d\n",num,score);  //加-表示左对齐
    return 0;
}*/

/*int main()
{
    int n=123;
    printf("%d\n",n);//十进制
    printf("%o\n",n);//八进制
    printf("%x\n",n);//十六进制
    return 0;
}*/

/*int main()
{
    int i;
    scanf("%d",&i);
    printf("i=%d\n",i);
    char c;
    //getchar();
    fflush(stdin); //清空标准输入缓冲区
    scanf("%c",&c);
    printf("c=%c\n",c);
    return 0;
}*/

int main()
{
    int a;
    char c;
    float f;
    scanf("%d %c%f",&a,&c,&f); //多种数据类型混合输入
    printf("a=%d c=%c f=%.2f",a,c,f);
    return 0;
}
